District ob



(No Model.)

L. GERHARDT.

v OA-R LOOK. iN'0.- 498,512. Patented May 30, 1893.

l/vmwroz M1014... 6y 626.77%4011 Attorney.

Unrran STATS 'rnn'r FFICEQ LINCOLN GERHARDT, OF I/VASHINGTON, DISTRICTOF COLUMBIA, ASSIGNOR OF ONE-HALF TO FRANK HUME, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 498,512, dated May 30,1893.

Application filed January 21, 1893. Serial No. 41591097. (No model.)

T0 all whom it may concern.-

Be it known that I, LINCOLN GERHARDT, a citizen of the United States,residing at W'ashington, in the District of Columbia, have inventedcertain new and useful Improvements in Oar-Locks, of which the followingis a specification, reference being had therein to the accompanyingdrawings.

This invention relates to means for removably connecting oar-lockswiththeir stationary sockets; and the objects of my improvements are topromptly unite an oar-lock with its socket in the gunwale of a boat, inposition to receive an car, and to also promptly disconnect it when notrequired for use, and retain it locked in an inverted position undersaid gunwale with its spindle again received within its socket, leavingthe latter free of any projections upon its top, that might otherwiseinterfere with the operations of gunners, fishermen or other occupantsof the boat. I attain these objects by the construction illustrated inthe accompanying drawings, in which- Figure 1 represents in side viewand partly in section an oar-lock socket, oar-lock, and its swivel-latchconstructed in accordance with my invention. Fig. 2 is a side view ofthe same parts with the oar-lock inverted under its socket. Fig. 3 is aperspective view of the socket. Fig. 4 is a side view partly in sectionof the lower portion and spindle of an oar-lock having a chamberedrecess on one side of its center for the reception of its swivel latch,and in that particular is a modification of the construction shown inFig. 1.

, Fig. 5 is a side View of another modification showing the lower end ofthe oar-lock spindle recessed or chambered on both sides of its center,on either side of which, the swivel latch can be folded to pass throughit the oarlock socket. Fig. 6 is an edge view ofthe oar-lock spindleshown in Fig. 5. Fig. 7 is a perspective View of the swivel-latch withthe branches of its loop-ring opened to facilitate its connection withthe oar-lock spindle. Fig. 8 is a modification of the swivel latchshowing the ring split with the ends lapped and the base of theloop-ring in the form of a segment of a cylinder, and adapted to beconthe lower edge of said gunwale.

nected to the spindle shown in Figs. 5 and 6 so that when the oar-lockis inverted its fiat face will rest upon the top plate of the socket andits rounded face'will present hardly any projection thereon.' Fig. 9 isa modification of the swivel latch, showing it made of a looped piece ofwire.

In said drawings A represents the tubular oar-lock socket havingformed-around its upper end, a head in the form of a rectangular plate Athat is generally setin a shallowrecess formed in'the gunwale of a boatso that the top of said plate is on the same lever as the top of saidgunwale. The lowerend of the socket is also generally made even with YWithin the socket A, the spindle B of the oar lock is placed, its collar17 resting upon the plate A and above said collar the arms B of the lockproject and are of any suitable and well known form. jects a suitabledistance beyond the lower end of the socket A, and under said end, isprovided with a recess or chamber 0 to receive the swivel latch D thatis provided with a central loop or ring 01 and arms 01 on two sidesthereofso as to bear against two opposite points on the end of thesocket A, when the oar-lock is accidentally lifted, or against twoopposite points of its top plate A when the oar-look is inverted. Theswivel latch is retained connected with the lower end by the means of atransverse bar b formed thereon. To receive the arms 61 of theswivel-latch under the top surface of the plate A of the socket when theoar-lock is inverted, small grooves a are made across it in said surfacealongside of its central perforation. But if the swivel latch shown inFig. 8 is used said grooves a may be dispensed with as it presents arounded surface of but slight elevation. The form of the swivel-latchcarried by the spindle in Figs. 1, 2 and 5 is clearly shown in Figs. 6and 7. The swivel latch shown in Figgt is also similar to the one shownin Figs. 6 and 7 except that the opening in the ring is slightlysmaller. In either one of the modifications shown the receiving chamberfor the swivel-latch is long enough to receive one of the arms 0?, topermit said swivel-latch The lower end of the spindle Bproto be turnedwith its arms parallel with the axis of the spindle under the control ofthe operator, but to remain normally in a horizontal position after ithas issued from the socket A.

I am aware that the spindles of oar-locks have been provided with a cordor chain secured to their lower end and a cross bar carried on the lowerend of said chain, but said fastenings cannot be readily diverted upwardchamber extended wholly across said spindle, and a cross barin saidchamber, with a swivellatch having a ring mounted upon said cross barand two arms either one of which is adapted to be received in saidchamber substantially as described.

2. The combination of an oar-lock socket having a top plate providedwith transverse grooves in its surface with an oar-lock having a spindleprovided with a chamber in its lower end and a swivel-latch pivotedwithin said chamber and adapted to fit in said grooves when the car lockis in its reversed position substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LINCOLN GERHARDT.

Witnesses:

E. E. MASSON, A. B. DEGGES.

